The first point to mention that I live in Spain and the CPU have acquired Amazon.es. Since my old system is already more than 5 years old, I decided for a basic upgrade. In principle, all components have been replaced to the case and the hard drive. The Intel Quad Core i7-4790K processor is operated on an Asus Z97-Pro motherboard. Furthermore 2x 8GB memory modules Kingston HyperX Savage, and NVIDIA GTX 760 graphics card from EVGA were installed. The processor has been identified easily and works under Windows 8.1 64bit properly. All programs and games run stable. So far I am very satisfied with the new processor, as well as with the entire system and can recommend it without hesitation. In Intel Core i7-4790K processor Amazon.es for about 300 Euro is offered.